DragonflyTV checks out the Carnegie Science Center where Tyler and Aditya design a roller coaster to ride in the simulator. Then these roller coaster maniacs head to a local amusement park and ride the same roller coaster 17 times! All that practice helps them figure out how g-forces work.

Outside of Japan, Pittsburgh is a top robotics city. See how Manuela Veloso, a professor at Carnegie Mellon University, programs robo-dogs to compete in international soccer tournaments in DFTV's Scientist Profile.

And last, but not least, take the GPS Whiz Quiz, just to the right on this page, to see if you can figure out what's unconventional about Pittsburgh's Convention Center.